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| author | Joern Rennecke <joern.rennecke@embecosm.com> | 2014-10-15 09:04:12 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2014-10-15 10:04:12 +0100 |
| commit | 6393e9d626ea2410a914e8374967e7ecc4e3a22b (patch) | |
| tree | 97aa7e24bf72969a22733b989f0562b4027b5464 | |
| parent | 7f3083e71d044f1baac68e9b6e43e2dd5f343680 (diff) | |
| download | gcc-6393e9d626ea2410a914e8374967e7ecc4e3a22b.tar.gz | |
As discussed: https://gcc.gnu.org/ml/gcc-patches/2014-10/msg00420.html
2014-10-15 Joern Rennecke <joern.rennecke@embecosm.com>
Jeff Law <law@redhat.com>
* caller-save.c (replace_reg_with_saved_mem): If saved_mode covers
multiple hard registers, use smaller mode derived from MODE.
Co-Authored-By: Jeff Law <law@redhat.com>
From-SVN: r216243
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/caller-save.c | 9 |
2 files changed, 12 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4316fa268ad..dc672ca2bc9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-10-15 Joern Rennecke <joern.rennecke@embecosm.com> + Jeff Law <law@redhat.com> + + * caller-save.c (replace_reg_with_saved_mem): If saved_mode covers + multiple hard registers, use smaller mode derived from MODE. + 2014-10-15 Andreas Schwab <schwab@suse.de> * explow.c (convert_memory_address_addr_space_1): Mark in_const diff --git a/gcc/caller-save.c b/gcc/caller-save.c index e28facba7be..31b1a365b7a 100644 --- a/gcc/caller-save.c +++ b/gcc/caller-save.c @@ -1158,9 +1158,12 @@ replace_reg_with_saved_mem (rtx *loc, } else { - gcc_assert (save_mode[regno] != VOIDmode); - XVECEXP (mem, 0, i) = gen_rtx_REG (save_mode [regno], - regno + i); + enum machine_mode smode = save_mode[regno]; + gcc_assert (smode != VOIDmode); + if (hard_regno_nregs [regno][smode] > 1) + smode = mode_for_size (GET_MODE_SIZE (mode) / nregs, + GET_MODE_CLASS (mode), 0); + XVECEXP (mem, 0, i) = gen_rtx_REG (smode, regno + i); } } |